# Page Not Found

The URL `the-lightning-network/lightning-overview/understanding-lightning-invoices` does not exist.

You might be looking for one of these pages:
- [Understanding Lightning Invoices](https://docs.lightning.engineering/the-lightning-network/payment-lifecycle/understanding-lightning-invoices.md)
- [Understanding Liquidity](https://docs.lightning.engineering/the-lightning-network/liquidity/understanding-liquidity.md)
- [Understanding Submarine Swaps](https://docs.lightning.engineering/the-lightning-network/multihop-payments/understanding-submarine-swaps.md)
- [Understanding Sweeping](https://docs.lightning.engineering/the-lightning-network/payment-channels/understanding-sweeping.md)
- [Finding routes in the Lightning Network](https://docs.lightning.engineering/the-lightning-network/pathfinding/finding-routes-in-the-lightning-network.md)

## How to find the correct page

1. **Browse the full index**: [/sitemap.md](https://docs.lightning.engineering/sitemap.md) - Complete documentation index
2. **View the full content**: [/llms-full.txt](https://docs.lightning.engineering/llms-full.txt) - Full content export

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/the-lightning-network/payment-lifecycle/understanding-lightning-invoices.md`)
- Use `Accept: text/markdown` header for content negotiation